229.testing of Ycgf-11 With F6150-FieldFailure [PDF]

Zitiervorschau

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40

ProTesT

Notebook Report

Originator Notes:

User Notes:

YCGF11: Loss of field supply to a synchronous generator can be caused by a fault in the excitation circuits or by incorrect opening of the field circuit breaker. On loss of field, the machine operates as an induction generator excited by reactive power drawn from the system to which it is connected. This could result in instability of power in the system and overheating of the rotor, especially if the machine is of the cylindrical rotor type without damping windings in the pole faces. To avoid mal-operation due to synchronising surges and transient conditions, the relay is used with a simple definite time delay relay and arranged to initiate alarm, tripping or load shedding if adverse field conditions persist longer than a safe period. When used with generators designed for line charging which can operate at rotor angles in excess of 90°, the diameter of the circle characteristic must be set small. At this setting, the impedance locus of the machine, on loss of field, can enter and leave the relay circle characteristic at intervals depending mainly on load conditions prior to the fault. To ensure correct operation in these conditions, it is necessary to use a set of timers and auxiliary relays. This arrangement is standard for turbo-alternator sets installed by many utilities.

Formule;

RANGES: Settings of Circle diameter: ( 25 to 250 ohms ) - 1A rating. ( 5 to 50 ohms ) - 5A rating. ( adjustable in 5% steps ) Setting of Offset: ( 2.5 to 20 ohms ) - 1A rating ( adjustable in 2.5 ohms steps ). ( 0.5 to 4 ohms ) - 5A rating ( adjustable in 0.5 ohms steps ). Maximum torque angle: The MTA is 270° lagging within a tolerance of ±5° TERMINAL NO. 9-10 C.T. INPUT2 7-8 P.T. INPUT 5-6 C.T. INPUT1 1-2 CONTACT 3-4 CONTACT

5/13/2005

MTA = {pHi(1) + pHi(2)} / 2 i.e. pHi(1) = 220 degree, & pHi(2) = 320 degree MTA = ( 220 + 320 ) / 2 = 270 degree Outer limit test: Expected value of voltage at which the relay will operate is; V = 2I ( ( K1*K5 ) + ( K3 + K4 ) ) NOTE: the injected value of current from follows: Circle diameter( K1*K5 ) Current to be injected 26 to 50 1.0 Ampere 50 to 125 0.4 Ampere 125 to 250 0.2 Ampere TESTING PROCEDURE: ---Connect RS232 9-pin connector from F6150 simulator to PC. ---Click the "TOOL" menu. ---Select F6000 configuration. Now Dialog box is Open. ---Select "3V & 3I" in pre-set configuration field. ---Select "VA" in Convertible V/I sources. ---Select "3" in Convertible V/I sources. ---Select "I1" in Current sources. ---Select "3" in Current sources. ---Connect wire from 1 and 2 terminals of relay to Logic Inputs-1 of "F6150". ---Connect wire from 7 and 8 terminals of relay to VA (red & black) terminals of "F6150". ---Connect wire from 5 and 10 terminals of relay to I1 (red & black) terminals of "F6150". ---Connect short-link between 6 & 9 terminals of relay. ---Click the "Macro" menu. ---Click "RUN" command.

DOBLE ENGINEERING PVT LTD

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40

TESTCIRCUIT: VA

I1

3

4

5

7 6 YCGF-11 8

9 10

DOBLE ENGINEERING PVT LTD

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40

SET PARAMETERS IN SETTING MENU:

AUTOMATIC SETTING CALCULATION

TEST PARAMETER SET AUTOMATICALLY

ENTER VALUE FOR RELAY PARAMETERS

DOBLE ENGINEERING PVT LTD

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40

AUTOMATIC SET CIRCLE CHARACTERISTIC

DOBLE ENGINEERING PVT LTD

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40 TEST RESULTS FOR OUTER LIMIT:

ACTUAL READINGS

CHARACTERISTIC TEST ANGLE RANGE INSTEPS OF 10 DEGREES

DOBLE ENGINEERING PVT LTD

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40 TEST RESULTS FOR INNER LIMIT:

ACTUAL READINGS FOR INNER LIMIT

DOBLE ENGINEERING PVT LTD

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40

ACTUAL CURVE ON READINGS:

INNER LIMIT

OUTER LIMIT

DOBLE ENGINEERING PVT LTD

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40

TEST REPORT INCLUDING GRAPH: 5/13/2005

OURTLIMIT:

Test Report

ProTesT Src

High

Low

VA I1

7 5

8 10

Ampl

Phs

Freq

ACTION ACTION 1 0

50.000 50.000

Current Conditions Prefault Conditions Duration (Cycles): Src Ampl

VA I1 Conditions

Ampl

Units

Offset Voltage Offset Duration +/- Delta Voltage Delta Time Voltage Limit

80 10 -0.5 45 0

Volts Cycles Volts Cycles Volts

Sense Connections:

3-4

0.0 0.0

Jumpers: 6-9

FromAngle

ToAngle

Delta

Units

190.00

360.00

10.00

deg

Phs

Freq

0.0 0

Fault Info: A-E

Sense:

Contacts

TimeStamp

4/28/05 17:51:06

Z Angle 190.000 200.000 210.000 220.000 230.000 240.000 250.000 260.000 270.000 280.000 290.000 300.000 310.000 320.000 330.000 340.000 350.000 360.000

Z Actual 16.250 23.500 28.250 32.000 34.250 35.500 35.750 34.750 32.750 29.500 25.250 18.500

Volts

32.500 47.000 56.500 64.000 68.500 71.000 71.500 69.500 65.500 59.000 50.500 37.000

Delay: 0 Duration: 0 Source: MA Result

O->C

Cycles mSecs

No Op No Op Op Op Op Op Op Op Op Op Op Op Op Op No Op No Op No Op No Op

DOBLE ENGINEERING PVT LTD

Label

Value

Equation Current Angle K Factor

V/2I 1 0

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40 CHARACTERISTIC CURVE FOR OUTER LIMIT:

Originator Notes

User Notes

CLIENT: GEB-ASOJ, 220KV

CALCULATION:

RELAY SR.NO.:

CIRCLE DIAMETER (Z2) = K1*K5 = 0.85*36 = 30.6 OHMS

RESULT: OK OFFSET (Z1) = (K3 + K4) = K2 = 0 + 2 = 2.0 OHM TESTEDBY: KAMIN DAVE, DOBLE ENGINEERING PVT LTD TEST SETTING: K1 = 0.85 K2 = 2.0 Ohms K3 = 0.0 Ohms K4 = 2.0 Ohms K5 = 36.00 Ohms

K1 = 0.85 K2 = 2.0 Ohms K3 = 0.0 Ohms K4 = 2.0 Ohms K5 = 36 Ohms Expected value of operating voltage is; V = 2*1 ( ( 30.6 ) + ( 0.0 + 2.0 ) ) = 65.2 volts at phi = 270deg.

DOBLE ENGINEERING PVT LTD

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40

INNER LIMIT:

5/13/2005

Test Report

ProTesT Src

High

Low

VA 0 I1

7

8

ACTION ACTION

50.000

Current Conditions Prefault Conditions Duration (Cycles):

5

10

2

50.000

Src

Ampl

Phs

VA I1

0.0 0.0

0.0 0

Ampl

Phs

Freq

0

Conditions

Ampl

Units

Offset Voltage Offset Duration +/- Delta Voltage Delta Time Voltage Limit

0 10 0.5 30 30

Volts Cycles Volts Cycles Volts

Sense Connections:

3-4

Jumpers: 6-9

FromAngle

ToAngle

Delta

Units

190.00

350.00

10.00

deg

Freq

Fault Info: A-E

Sense:

Contacts

TimeStamp

4/28/05 18:29:29

Z Angle 190.000 200.000 210.000 220.000 230.000 240.000 250.000 260.000 270.000 280.000 290.000 300.000 310.000 320.000 330.000 340.000 350.000

Actual 5.375 3.875 3.125 3.125 2.625 2.500 2.500 2.875 2.750 3.125 3.625 4.750 6.625

Volts

21.500 15.500 12.500 12.500 10.500 10.000 10.000 11.500 11.000 12.500 14.500 19.000 26.500

Delay: 0 Duration: 0 Source: MA Result

O->C

Cycles mSecs

No Op No Op Op Op Op Op Op Op Op Op Op Op Op Op Op No Op No Op

DOBLE ENGINEERING PVT LTD

Label

Value

Equation Current Angle K Factor

V/2I 2 0

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40

Originator Notes

User Notes

CLIENT: GEB-ASOJ, 220KV

CALCULATION:

RELAY SR.NO.:

CIRCLE DIAMETER (Z2) = K1*K5 = 0.85*36 = 30.6 OHMS

RESULT: OK OFFSET (Z1) = (K3 + K4) = K2 = 0 + 2 = 2.0 OHM TESTEDBY: KAMIN DAVE, DOBLE ENGINEERING PVT LTD TEST SETTING: K1 = 0.85 K2 = 2.0 Ohms K3 = 0.0 Ohms K4 = 2.0 Ohms K5 = 36.00 Ohms

K1 = 0.85 K2 = 2.0 Ohms K3 = 0.0 Ohms K4 = 2.0 Ohms K5 = 36 Ohms Expected value of operating voltage is; V = 2*2 ( 2.0 ) = 8.0 volts at phi = 270deg.

DOBLE ENGINEERING PVT LTD

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40

MAXIMUM TORQUE ANGLE TEST:

I

V 227DEGREE

DOBLE ENGINEERING PVT LTD

V 311DEGREE

Macro Type: ZPLLRV

YCGF-11(FIELD FAILURE RELAY)

Location Path

\ALSTOM GENERAL\YCGF11\40

CO-ORDINATION CURVE AT DIFFERENT SETTINGS:

DOBLE ENGINEERING PVT LTD